From 9371b78d0594d156b2ad9174b116f04abac64911 Mon Sep 17 00:00:00 2001
From: Marc <mmarc471@gmail.com>
Date: Mon, 21 Feb 2022 10:12:32 +0100
Subject: [PATCH] removed nodefiles and added raise interface functionnality

---
 clibs/ip.cc                         |  34 ++++++++++++-
 clibs/socket.cc                     |  32 ------------
 rootfs overrides/core/.gitignore    |   7 +--
 rootfs overrides/core/ip.js         |  10 +++-
 rootfs overrides/core/ip.node       | Bin 22184 -> 0 bytes
 rootfs overrides/core/socket.node   | Bin 17128 -> 0 bytes
 rootfs overrides/usr/bin/ifflags.js |  73 ++++++++++++++++++++++++++++
 rootfs overrides/usr/bin/ifup.js    |  25 ++++++++++
 8 files changed, 141 insertions(+), 40 deletions(-)
 delete mode 100644 clibs/socket.cc
 delete mode 100755 rootfs overrides/core/ip.node
 delete mode 100755 rootfs overrides/core/socket.node
 create mode 100644 rootfs overrides/usr/bin/ifflags.js
 create mode 100644 rootfs overrides/usr/bin/ifup.js

diff --git a/clibs/ip.cc b/clibs/ip.cc
index 9ec0432..826ac44 100644
--- a/clibs/ip.cc
+++ b/clibs/ip.cc
@@ -6,10 +6,11 @@
 #include <linux/sockios.h>
 #include <unistd.h>
 #include <node.h>
+#include <errno.h>
 
 const int inet_sock_fd = socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
 
-namespace ioctlNode {
+namespace ipNode {
     int setflags(const char* iface, short flags) {
         struct ifreq ifr;
 
@@ -19,6 +20,34 @@ namespace ioctlNode {
         return ioctl(inet_sock_fd, SIOCSIFFLAGS, &ifr);
     }
 
+    int getIfreq(struct ifreq *ifr ) {
+        return ioctl(inet_sock_fd, SIOCGIFFLAGS, ifr);
+    }
+
+    void nodeGetFlags(const nodeparam& args) {
+        v8::Isolate* isolate = args.GetIsolate();
+
+        if (args.Length() < 1 || !args[0]->IsString()) {
+            isolate->ThrowException(v8::Exception::TypeError(
+                v8::String::NewFromUtf8(isolate, "Invalid arguments ip.getflags").ToLocalChecked()));
+            return;
+        }
+
+        std::string iface = argToString(args[0]);
+
+        struct ifreq ifr;
+        strncpy(ifr.ifr_name, iface.c_str(), IFNAMSIZ);
+        int err = getIfreq(&ifr);
+
+        if(err != 0) {
+            char errstr[36];
+            sprintf(errstr, "Error while getting flags %d", errno);
+            isolate->ThrowException(v8::Exception::TypeError(
+                v8::String::NewFromUtf8(isolate, errstr).ToLocalChecked()));
+        }
+        args.GetReturnValue().Set(ifr.ifr_flags);
+    }
+
     void nodeSetFlags(const nodeparam& args) {
         v8::Isolate* isolate = args.GetIsolate();
 
@@ -36,8 +65,9 @@ namespace ioctlNode {
 
     void Initialize(v8::Local<v8::Object> exports) {
         NODE_SET_METHOD(exports, "setFlags", nodeSetFlags);
+        NODE_SET_METHOD(exports, "getFlags", nodeGetFlags);
     }
 
-    NODE_MODULE(ioctl_api, Initialize)
+    NODE_MODULE(ip_api, Initialize)
 }
 
diff --git a/clibs/socket.cc b/clibs/socket.cc
deleted file mode 100644
index 39ae133..0000000
--- a/clibs/socket.cc
+++ /dev/null
@@ -1,32 +0,0 @@
-#include <unistd.h>
-#include <node.h>
-#include <fcntl.h>
-#include <string>
-#include <netinet/in.h>
-
-#define nodeparam v8::FunctionCallbackInfo<v8::Value>
-
-namespace ioctlNode {
-    void nodeSocket(const nodeparam& args) {
-        v8::Isolate* isolate = args.GetIsolate();
-
-        if (args.Length() != 3 || !args[0]->IsUint32() || !args[1]->IsUint32() || !args[2]->IsUint32()) {
-            isolate->ThrowException(v8::Exception::TypeError(
-                v8::String::NewFromUtf8(isolate, "Argument 1, 2 & 3 must be numbers").ToLocalChecked()));
-            return;
-        }
-
-        const int domain = args[0].As<v8::Number>()->Value();
-        const int type = args[1].As<v8::Number>()->Value();
-        const int protocol = args[2].As<v8::Number>()->Value();
-
-        args.GetReturnValue().Set(socket(domain ,type, protocol));
-    }
-
-
-    void Initialize(v8::Local<v8::Object> exports) {
-        NODE_SET_METHOD(exports, "socket", nodeSocket);
-    }
-
-    NODE_MODULE(ioctl_api, Initialize)
-}
diff --git a/rootfs overrides/core/.gitignore b/rootfs overrides/core/.gitignore
index e47f72a..987abd0 100644
--- a/rootfs overrides/core/.gitignore	
+++ b/rootfs overrides/core/.gitignore	
@@ -1,6 +1,3 @@
-syscall.node
-ioctl.node
-mount.node
-file.node
 node_modules
-package-lock.json
\ No newline at end of file
+package-lock.json
+*.node
\ No newline at end of file
diff --git a/rootfs overrides/core/ip.js b/rootfs overrides/core/ip.js
index 78ad4fd..4f7b155 100644
--- a/rootfs overrides/core/ip.js	
+++ b/rootfs overrides/core/ip.js	
@@ -32,4 +32,12 @@ function setFlags(interface, flags) {
     return ip.setFlags(interface, flags)
 }
 
-module.exports = { setFlags, flags }
\ No newline at end of file
+/**
+ * @param { string } interface
+ * @returns { number }
+ */
+function getFlags(interface) {
+    return ip.getFlags(interface);
+}
+
+module.exports = { setFlags, getFlags, flags }
\ No newline at end of file
diff --git a/rootfs overrides/core/ip.node b/rootfs overrides/core/ip.node
deleted file mode 100755
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diff --git a/rootfs overrides/core/socket.node b/rootfs overrides/core/socket.node
deleted file mode 100755
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GIT binary patch
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diff --git a/rootfs overrides/usr/bin/ifflags.js b/rootfs overrides/usr/bin/ifflags.js
new file mode 100644
index 0000000..5bbded3
--- /dev/null
+++ b/rootfs overrides/usr/bin/ifflags.js	
@@ -0,0 +1,73 @@
+//@ts-check
+const ip = require('../../core/ip')
+const fs = require('fs')
+const { exit } = require('process')
+
+function usage() {
+    console.log('invalid syntax')
+    console.log('ifup [interface name]')
+}
+
+if ( process.argv.length !== 4 ){
+    usage()
+    exit(1)
+}
+
+if ( !fs.existsSync('/sys/class/net/' + process.argv[3]) ) {
+    console.log("Interface not found")
+    exit(1)
+}
+
+
+let flagsStr = ''
+let flags = ip.getFlags(process.argv[3])
+
+if(flags & ip.flags.IFF_ALLMULTI) {
+    flagsStr += 'IFF_ALLMULTI\n'
+}
+if(flags & ip.flags.IFF_AUTOMEDIA) {
+    flagsStr += 'IFF_AUTOMEDIA\n'
+}
+if(flags & ip.flags.IFF_BROADCAST) {
+    flagsStr += 'IFF_BROADCAST\n'
+}
+if(flags & ip.flags.IFF_DEBUG) {
+    flagsStr += 'IFF_DEBUG\n'
+}
+if(flags & ip.flags.IFF_DYNAMIC) {
+    flagsStr += 'IFF_DYNAMIC\n'
+}
+if(flags & ip.flags.IFF_LOOPBACK) {
+    flagsStr += 'IFF_LOOPBACK\n'
+}
+if(flags & ip.flags.IFF_MASTER) {
+    flagsStr += 'IFF_MASTER\n'
+}
+if(flags & ip.flags.IFF_MULTICAST) {
+    flagsStr += 'IFF_MULTICAST\n'
+}
+if(flags & ip.flags.IFF_NOARP) {
+    flagsStr += 'IFF_NOARP\n'
+}
+if(flags & ip.flags.IFF_NOTRAILERS) {
+    flagsStr += 'IFF_NOTRAILERS\n'
+}
+if(flags & ip.flags.IFF_POINTOPOINT) {
+    flagsStr += 'IFF_POINTOPOINT\n'
+}
+if(flags & ip.flags.IFF_PORTSEL) {
+    flagsStr += 'IFF_PORTSEL\n'
+}
+if(flags & ip.flags.IFF_PROMISC) {
+    flagsStr += 'IFF_PROMISC\n'
+}
+if(flags & ip.flags.IFF_RUNNING) {
+    flagsStr += 'IFF_RUNNING\n'
+}
+if(flags & ip.flags.IFF_SLAVE) {
+    flagsStr += 'IFF_SLAVE\n'
+}
+if(flags & ip.flags.IFF_UP) {
+    flagsStr += 'IFF_SLAVE\n'
+}
+console.log(flagsStr)
\ No newline at end of file
diff --git a/rootfs overrides/usr/bin/ifup.js b/rootfs overrides/usr/bin/ifup.js
new file mode 100644
index 0000000..289d123
--- /dev/null
+++ b/rootfs overrides/usr/bin/ifup.js	
@@ -0,0 +1,25 @@
+//@ts-check
+const ip = require('../../core/ip')
+const fs = require('fs')
+const { exit } = require('process')
+
+function usage() {
+    console.log('invalid syntax')
+    console.log('ifup [interface name]')
+}
+
+if ( process.argv.length !== 4 ){
+    usage()
+    exit(1)
+}
+
+if ( !fs.existsSync('/sys/class/net/' + process.argv[3]) ) {
+    console.log("Interface not found")
+    exit(1)
+}
+
+let flags = ip.getFlags(process.argv[3])
+
+flags |= ip.flags.IFF_UP
+
+ip.setFlags(process.argv[3], flags)
\ No newline at end of file